Biography
Harold Allen Ramis (November 21, 1944 – February 24, 2014) was an American actor, director, and writer, specializing in comedy. His best-known film acting roles are as Egon Spengler in Ghostbusters (1984) and Russell Ziskey in Stripes (1981), both of which he co-wrote. As a writer/director, his films include the comedies Caddyshack (1980), Groundhog Day (1993), and Analyze This (1999). He was the original head writer of the TV series SCTV (in which he also performed), and one of three screenwriters for the film National Lampoon's Animal House (1978).
Known For

Ghostbusters
Egon Spengler

Knocked Up
Ben's Dad

Groundhog Day
Neurologist

Ghostbusters: Afterlife
Dr. Egon Spengler (archive footage) (uncredited)

Walk Hard: The Dewey Cox ...
L'Chaim

Ghostbusters II
Dr. Egon Spengler

National Lampoon's Vacati...
Car salesman (voice) (uncredited)

As Good as It Gets
Dr. Bettes

Love Affair
Sheldon Blumenthal

The Earth Day Special
Elon Spengler